htmljavamysql数据交互之数据分页显示

Posted 2020-09-23 万载一梦

在上文中我们已经从数据库中获取到了数据，并且可以显示在html页面上。本文是继上文之后，将获取到的数据集进行处理之后显示在页面上。

从所接触的知识面，这里想到了有两种方案。

一、使用容器将获得的数据保存起来，然后显示到页面上。

二、重写ResultSet类方法，实现ResultSet的分页，并使用jsp显示到页面上。

 

两种方式都可行，考虑到大数据的效率问题，这里选择了方法二。

 

一、重写ResultSet类，实现记录集的分页

 

1.添加Pageable接口

package com.cn.page;

import java.sql.ResultSet;

public interface Pageable extends ResultSet {
    
    int getPageCount();
    
    int getPageRowsCount();
    
    int getPageSize();
    
    void gotoPage(int page);
    
    void setPageSize(int pageSize);
    
    int getRowsCount();
    
    void pageFirst() throws java.sql.SQLException;
    
    void pageLast() throws java.sql.SQLException;
    
    int getCurrentPage();
}

2.添加PageableResultSet实现类

package com.cn.page;

import java.io.InputStream;
import java.io.Reader;
import java.math.BigDecimal;
import java.net.URL;
import java.sql.Array;
import java.sql.Blob;
import java.sql.Clob;
import java.sql.Date;
import java.sql.NClob;
import java.sql.Ref;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.RowId;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.SQLXML;
import java.sql.Statement;
import java.sql.Time;
import java.sql.Timestamp;
import java.util.Calendar;
import java.util.Map;

public class PageableResultSet implements Pageable{

    protected ResultSet rs=null;
    protected int rowsCount;
    protected int pageSize;
    protected int currentPage;
    protected String command = "";
    
    public PageableResultSet(java.sql.ResultSet rs) throws java.sql.SQLException{
        if(null == rs){
            throw new SQLException("given REsultSet is NULL","user");
        }
        rs.last();
        rowsCount = rs.getRow();
        System.out.println(rowsCount);
        
        rs.beforeFirst();
        this.rs = rs;
    }
    
    
    @Override
    //获取总页数
    public int getPageCount() {
        // TODO Auto-generated method stub
        if(0 == rowsCount){
            return 0;
        }
        if(0 == pageSize){
            return 1;
        }
        double tmpD = (double)rowsCount/pageSize;
        int tmpl=(int)tmpD;
        if(tmpD > tmpl){
            tmpl++;
        }
        
        return tmpl;
    }

    @Override
    //获取当前页的记录条数
    public int getPageRowsCount() {
        // TODO Auto-generated method stub
        if(0 == pageSize){
            return rowsCount;
        }
        if(0 == getRowsCount()){
            return 0;
        }
        if(currentPage != getPageCount()){
            return pageSize;
        }
        
        return rowsCount - (getPageCount() - 1)*pageSize;
    }

    @Override
    public int getPageSize() {
        
        return pageSize;
    }
    
    //跳转到第几页
    public void gotoPage(int page) {
        // TODO Auto-generated method stub
        if(null == rs){
            return;
        }
        if(page < 1){
            page = 1;
        }
        if(page > getPageCount())
        {
            page = getPageCount();                    
        }    
        int row = (page -1)*pageSize + 1;
        try {
            rs.absolute(row);
            currentPage = page;
        }catch (java.sql.SQLException e){
            e.printStackTrace();
        }
    }

    @Override
    public void setPageSize(int pageSize) {
        // TODO Auto-generated method stub
        if(pageSize >= 0){
            this.pageSize = pageSize;
            currentPage = 1;
        }
    }

    @Override
    //总的记录条数
    public int getRowsCount() {
        // TODO Auto-generated method stub
        return rowsCount;
    }

    @Override
    public void pageFirst() throws SQLException {
        // TODO Auto-generated method stub
        int row = (currentPage - 1)*pageSize + 1;
        rs.absolute(row);
    }

    @Override
    public void pageLast() throws SQLException {
        // TODO Auto-generated method stub
        int row = (currentPage - 1)*pageSize + getPageRowsCount();
        rs.absolute(row);
    }

    @Override
    public int getCurrentPage() {
        // TODO Auto-generated method stub
        
        return currentPage;
    }

    @Override
    public boolean next() throws SQLException {
        // TODO Auto-generated method stub
        return rs.next();
    }

    @Override
    public void close() throws SQLException {
        // TODO Auto-generated method stub
        rs.close();
    }

    @Override
    public boolean wasNull() throws SQLException {
        // TODO Auto-generated method stub
        return rs.wasNull();
    }

    @Override
    public String getString(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getString(columnIndex);
    }

    @Override
    public boolean getBoolean(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getBoolean(columnIndex);
    }

    @Override
    public byte getByte(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getByte(columnIndex);
    }

    @Override
    public short getShort(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getByte(columnIndex);
    }

    @Override
    public int getInt(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getInt(columnIndex);
    }

    @Override
    public long getLong(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getLong(columnIndex);
    }

    @Override
    public float getFloat(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getFloat(columnIndex);
    }

    @Override
    public double getDouble(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getDouble(columnIndex);
    }

    @SuppressWarnings("deprecation")
    @Override
    public BigDecimal getBigDecimal(int columnIndex, int scale)
            throws SQLException {
        // TODO Auto-generated method stub
        return rs.getBigDecimal(columnIndex, scale);
    }

    @Override
    public byte[] getBytes(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getBytes(columnIndex);
    }

    @Override
    public Date getDate(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getDate(columnIndex);
    }

    @Override
    public Time getTime(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getTime(columnIndex);
    }

    @Override
    public Timestamp getTimestamp(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getTimestamp(columnIndex);
    }

    @Override
    public InputStream getAsciiStream(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getAsciiStream(columnIndex);
    }

    @SuppressWarnings("deprecation")
    @Override
    public InputStream getUnicodeStream(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getUnicodeStream(columnIndex);
    }

    @Override
    public InputStream getBinaryStream(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getBinaryStream(columnIndex);
    }

    @Override
    public String getString(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getString(columnLabel);
    }

    @Override
    public boolean getBoolean(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getBoolean(columnLabel);
    }

    @Override
    public byte getByte(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getByte(columnLabel);
    }

    @Override
    public short getShort(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getShort(columnLabel);
    }

    @Override
    public int getInt(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getInt(columnLabel);
    }

    @Override
    public long getLong(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getLong(columnLabel);
    }

    @Override
    public float getFloat(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getFloat(columnLabel);
    }

    @Override
    public double getDouble(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getDouble(columnLabel);
    }

    @SuppressWarnings("deprecation")
    @Override
    public BigDecimal getBigDecimal(String columnLabel, int scale)
            throws SQLException {
        // TODO Auto-generated method stub
        return rs.getBigDecimal(columnLabel, scale);
    }

    @Override
    public byte[] getBytes(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getBytes(columnLabel);
    }

    @Override
    public Date getDate(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getDate(columnLabel);
    }

    @Override
    public Time getTime(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getTime(columnLabel);
    }

    @Override
    public Timestamp getTimestamp(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getTimestamp(columnLabel);
    }

    @Override
    public InputStream getAsciiStream(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getAsciiStream(columnLabel);
    }

    @SuppressWarnings("deprecation")
    @Override
    public InputStream getUnicodeStream(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getUnicodeStream(columnLabel);
    }

    @Override
    public InputStream getBinaryStream(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getBinaryStream(columnLabel);
    }

    @Override
    public SQLWarning getWarnings() throws SQLException {
        // TODO Auto-generated method stub
        return rs.getWarnings();
    }

    @Override
    public void clearWarnings() throws SQLException {
        // TODO Auto-generated method stub
        rs.clearWarnings();
    }

    @Override
    public String getCursorName() throws SQLException {
        // TODO Auto-generated method stub
        return rs.getCursorName();
    }

    @Override
    public ResultSetMetaData getMetaData() throws SQLException {
        // TODO Auto-generated method stub
        return rs.getMetaData();
    }

    @Override
    public Object getObject(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getObject(columnIndex);
    }

    @Override
    public Object getObject(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getObject(columnLabel);
    }

    @Override
    public int findColumn(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.findColumn(columnLabel);
    }

    @Override
    public Reader getCharacterStream(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getCharacterStream(columnIndex);
    }

    @Override
    public Reader getCharacterStream(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getCharacterStream(columnLabel);
    }

    @Override
    public BigDecimal getBigDecimal(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getBigDecimal(columnIndex);
    }

    @Override
    public BigDecimal getBigDecimal(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getBigDecimal(columnLabel);
    }

    @Override
    public boolean isBeforeFirst() throws SQLException {
        // TODO Auto-generated method stub
        return rs.isBeforeFirst();
    }

    @Override
    public boolean isAfterLast() throws SQLException {
        // TODO Auto-generated method stub
        return rs.isAfterLast();
    }

    @Override
    public boolean isFirst() throws SQLException {
        // TODO Auto-generated method stub
        return rs.isFirst();
    }

    @Override
    public boolean isLast() throws SQLException {
        // TODO Auto-generated method stub
        return rs.isLast();
    }

    @Override
    public void beforeFirst() throws SQLException {
        // TODO Auto-generated method stub
        rs.beforeFirst();
    }

    @Override
    public void afterLast() throws SQLException {
        // TODO Auto-generated method stub
        rs.afterLast();
    }

    @Override
    public boolean first() throws SQLException {
        // TODO Auto-generated method stub
        return rs.first();
    }

    @Override
    public boolean last() throws SQLException {
        // TODO Auto-generated method stub
        return rs.last();
    }

    @Override
    public int getRow() throws SQLException {
        // TODO Auto-generated method stub
        return rs.getRow();
    }

    @Override
    public boolean absolute(int row) throws SQLException {
        // TODO Auto-generated method stub
        return rs.absolute(row);
    }

    @Override
    public boolean relative(int rows) throws SQLException {
        // TODO Auto-generated method stub
        return rs.relative(rows);
    }

    @Override
    public boolean previous() throws SQLException {
        // TODO Auto-generated method stub
        return rs.previous();
    }

    @Override
    public void setFetchDirection(int direction) throws SQLException {
        // TODO Auto-generated method stub
        rs.setFetchDirection(direction);
    }

    @Override
    public int getFetchDirection() throws SQLException {
        // TODO Auto-generated method stub
        return rs.getFetchDirection();
    }

    @Override
    public void setFetchSize(int rows) throws SQLException {
        // TODO Auto-generated method stub
        rs.setFetchSize(rows);
    }

    @Override
    public int getFetchSize() throws SQLException {
        // TODO Auto-generated method stub
        return rs.getFetchSize();
    }

    @Override
    public int getType() throws SQLException {
        // TODO Auto-generated method stub
        return rs.getType();
    }

    @Override
    public int getConcurrency() throws SQLException {
        // TODO Auto-generated method stub
        return rs.getConcurrency();
    }

    @Override
    public boolean rowUpdated() throws SQLException {
        // TODO Auto-generated method stub
        return rs.rowUpdated();
    }

    @Override
    public boolean rowInserted() throws SQLException {
        // TODO Auto-generated method stub
        return rs.rowInserted();
    }

    @Override
    public boolean rowDeleted() throws SQLException {
        // TODO Auto-generated method stub
        return rs.rowDeleted();
    }

    @Override
    public void updateNull(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateNull(columnIndex);
    }

    @Override
    public void updateBoolean(int columnIndex, boolean x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBoolean(columnIndex, x);
    }

    @Override
    public void updateByte(int columnIndex, byte x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateByte(columnIndex, x);
    }

    @Override
    public void updateShort(int columnIndex, short x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateShort(columnIndex, x);
    }

    @Override
    public void updateInt(int columnIndex, int x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateInt(columnIndex, x);
    }

    @Override
    public void updateLong(int columnIndex, long x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateLong(columnIndex, x);
    }

    @Override
    public void updateFloat(int columnIndex, float x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateFloat(columnIndex, x);
    }

    @Override
    public void updateDouble(int columnIndex, double x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateDouble(columnIndex, x);
    }

    @Override
    public void updateBigDecimal(int columnIndex, BigDecimal x)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBigDecimal(columnIndex, x);
    }

    @Override
    public void updateString(int columnIndex, String x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateString(columnIndex, x);
    }

    @Override
    public void updateBytes(int columnIndex, byte[] x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBytes(columnIndex, x);
    }

    @Override
    public void updateDate(int columnIndex, Date x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateDate(columnIndex, x);
    }

    @Override
    public void updateTime(int columnIndex, Time x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateTime(columnIndex, x);
    }

    @Override
    public void updateTimestamp(int columnIndex, Timestamp x)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateTimestamp(columnIndex, x);
    }

    @Override
    public void updateAsciiStream(int columnIndex, InputStream x, int length)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateAsciiStream(columnIndex, x, length);
    }

    @Override
    public void updateBinaryStream(int columnIndex, InputStream x, int length)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBinaryStream(columnIndex, x, length);
    }

    @Override
    public void updateCharacterStream(int columnIndex, Reader x, int length)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateCharacterStream(columnIndex, x, length);
    }

    @Override
    public void updateObject(int columnIndex, Object x, int scaleOrLength)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateObject(columnIndex, x, scaleOrLength);
    }

    @Override
    public void updateObject(int columnIndex, Object x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateObject(columnIndex, x);
    }

    @Override
    public void updateNull(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateNull(columnLabel);
    }

    @Override
    public void updateBoolean(String columnLabel, boolean x)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBoolean(columnLabel, x);
    }

    @Override
    public void updateByte(String columnLabel, byte x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateByte(columnLabel, x);
    }

    @Override
    public void updateShort(String columnLabel, short x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateShort(columnLabel, x);
    }

    @Override
    public void updateInt(String columnLabel, int x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateInt(columnLabel, x);
    }

    @Override
    public void updateLong(String columnLabel, long x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateLong(columnLabel, x);
    }

    @Override
    public void updateFloat(String columnLabel, float x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateFloat(columnLabel, x);
    }

    @Override
    public void updateDouble(String columnLabel, double x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateDouble(columnLabel, x);
    }

    @Override
    public void updateBigDecimal(String columnLabel, BigDecimal x)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBigDecimal(columnLabel, x);
    }

    @Override
    public void updateString(String columnLabel, String x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateString(columnLabel, x);
    }

    @Override
    public void updateBytes(String columnLabel, byte[] x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBytes(columnLabel, x);
    }

    @Override
    public void updateDate(String columnLabel, Date x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateDate(columnLabel, x);
    }

    @Override
    public void updateTime(String columnLabel, Time x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateTime(columnLabel, x);
    }

    @Override
    public void updateTimestamp(String columnLabel, Timestamp x)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateTimestamp(columnLabel, x);
    }

    @Override
    public void updateAsciiStream(String columnLabel, InputStream x, int length)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateAsciiStream(columnLabel, x, length);
    }

    @Override
    public void updateBinaryStream(String columnLabel, InputStream x, int length)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBinaryStream(columnLabel, x, length);
    }

    @Override
    public void updateCharacterStream(String columnLabel, Reader reader,
            int length) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateCharacterStream(columnLabel, reader, length);
    }

    @Override
    public void updateObject(String columnLabel, Object x, int scaleOrLength)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateObject(columnLabel, x, scaleOrLength);
    }

    @Override
    public void updateObject(String columnLabel, Object x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateObject(columnLabel, x);
    }

    @Override
    public void insertRow() throws SQLException {
        // TODO Auto-generated method stub
        rs.insertRow();
    }

    @Override
    public void updateRow() throws SQLException {
        // TODO Auto-generated method stub
        rs.updateRow();
    }

    @Override
    public void deleteRow() throws SQLException {
        // TODO Auto-generated method stub
        rs.deleteRow();
    }

    @Override
    public void refreshRow() throws SQLException {
        // TODO Auto-generated method stub
        rs.refreshRow();
    }

    @Override
    public void cancelRowUpdates() throws SQLException {
        // TODO Auto-generated method stub
        rs.cancelRowUpdates();
    }

    @Override
    public void moveToInsertRow() throws SQLException {
        // TODO Auto-generated method stub
        rs.moveToInsertRow();
    }

    @Override
    public void moveToCurrentRow() throws SQLException {
        // TODO Auto-generated method stub
        rs.moveToCurrentRow();
    }

    @Override
    public Statement getStatement() throws SQLException {
        // TODO Auto-generated method stub
        return rs.getStatement();
    }

    @Override
    public Object getObject(int columnIndex, Map<String, Class<?>> map)
            throws SQLException {
        // TODO Auto-generated method stub
        return rs.getObject(columnIndex, map);
    }

    @Override
    public Ref getRef(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getRef(columnIndex);
    }

    @Override
    public Blob getBlob(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getBlob(columnIndex);
    }

    @Override
    public Clob getClob(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getClob(columnIndex);
    }

    @Override
    public Array getArray(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getArray(columnIndex);
    }

    @Override
    public Object getObject(String columnLabel, Map<String, Class<?>> map)
            throws SQLException {
        // TODO Auto-generated method stub
        return rs.getObject(columnLabel, map);
    }

    @Override
    public Ref getRef(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getRef(columnLabel);
    }

    @Override
    public Blob getBlob(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getBlob(columnLabel);
    }

    @Override
    public Clob getClob(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getClob(columnLabel);
    }

    @Override
    public Array getArray(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getArray(columnLabel);
    }

    @Override
    public Date getDate(int columnIndex, Calendar cal) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getDate(columnIndex, cal);
    }

    @Override
    public Date getDate(String columnLabel, Calendar cal) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getDate(columnLabel, cal);
    }

    @Override
    public Time getTime(int columnIndex, Calendar cal) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getTime(columnIndex, cal);
    }

    @Override
    public Time getTime(String columnLabel, Calendar cal) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getTime(columnLabel, cal);
    }

    @Override
    public Timestamp getTimestamp(int columnIndex, Calendar cal)
            throws SQLException {
        // TODO Auto-generated method stub
        return rs.getTimestamp(columnIndex, cal);
    }

    @Override
    public Timestamp getTimestamp(String columnLabel, Calendar cal)
            throws SQLException {
        // TODO Auto-generated method stub
        return rs.getTimestamp(columnLabel, cal);
    }

    @Override
    public URL getURL(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getURL(columnIndex);
    }

    @Override
    public URL getURL(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getURL(columnLabel);
    }

    @Override
    public void updateRef(int columnIndex, Ref x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateRef(columnIndex, x);
    }

    @Override
    public void updateRef(String columnLabel, Ref x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateRef(columnLabel, x);
    }

    @Override
    public void updateBlob(int columnIndex, Blob x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBlob(columnIndex, x);
    }

    @Override
    public void updateBlob(String columnLabel, Blob x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBlob(columnLabel, x);
    }

    @Override
    public void updateClob(int columnIndex, Clob x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateClob(columnIndex, x);
    }

    @Override
    public void updateClob(String columnLabel, Clob x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateClob(columnLabel, x);
    }

    @Override
    public void updateArray(int columnIndex, Array x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateArray(columnIndex, x);
    }

    @Override
    public void updateArray(String columnLabel, Array x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateArray(columnLabel, x);
    }

    @Override
    public RowId getRowId(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getRowId(columnIndex);
    }

    @Override
    public RowId getRowId(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getRowId(columnLabel);
    }

    @Override
    public void updateRowId(int columnIndex, RowId x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateRowId(columnIndex, x);
    }

    @Override
    public void updateRowId(String columnLabel, RowId x) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateRowId(columnLabel, x);
    }

    @Override
    public int getHoldability() throws SQLException {
        // TODO Auto-generated method stub
        return rs.getHoldability();
    }

    @Override
    public boolean isClosed() throws SQLException {
        // TODO Auto-generated method stub
        return rs.isClosed();
    }

    @Override
    public void updateNString(int columnIndex, String nString)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateNString(columnIndex, nString);
    }

    @Override
    public void updateNString(String columnLabel, String nString)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateNString(columnLabel, nString);
    }

    @Override
    public void updateNClob(int columnIndex, NClob nClob) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateNClob(columnIndex, nClob);
    }

    @Override
    public void updateNClob(String columnLabel, NClob nClob)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateNClob(columnLabel, nClob);
    }

    @Override
    public NClob getNClob(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getNClob(columnIndex);
    }

    @Override
    public NClob getNClob(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getNClob(columnLabel);
    }

    @Override
    public SQLXML getSQLXML(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getSQLXML(columnIndex);
    }

    @Override
    public SQLXML getSQLXML(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getSQLXML(columnLabel);
    }

    @Override
    public void updateSQLXML(int columnIndex, SQLXML xmlObject)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateSQLXML(columnIndex, xmlObject);
    }

    @Override
    public void updateSQLXML(String columnLabel, SQLXML xmlObject)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateSQLXML(columnLabel, xmlObject);
    }

    @Override
    public String getNString(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getNString(columnIndex);
    }

    @Override
    public String getNString(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getNString(columnLabel);
    }

    @Override
    public Reader getNCharacterStream(int columnIndex) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getNCharacterStream(columnIndex);
    }

    @Override
    public Reader getNCharacterStream(String columnLabel) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getNCharacterStream(columnLabel);
    }

    @Override
    public void updateNCharacterStream(int columnIndex, Reader x, long length)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateNCharacterStream(columnIndex, x, length);
    }

    @Override
    public void updateNCharacterStream(String columnLabel, Reader reader,
            long length) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateNCharacterStream(columnLabel, reader, length);
    }

    @Override
    public void updateAsciiStream(int columnIndex, InputStream x, long length)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateAsciiStream(columnIndex, x, length);
    }

    @Override
    public void updateBinaryStream(int columnIndex, InputStream x, long length)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBinaryStream(columnIndex, x, length);
    }

    @Override
    public void updateCharacterStream(int columnIndex, Reader x, long length)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateCharacterStream(columnIndex, x, length);
    }

    @Override
    public void updateAsciiStream(String columnLabel, InputStream x, long length)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateAsciiStream(columnLabel, x, length);
    }

    @Override
    public void updateBinaryStream(String columnLabel, InputStream x,
            long length) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBinaryStream(columnLabel, x, length);
    }

    @Override
    public void updateCharacterStream(String columnLabel, Reader reader,
            long length) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateCharacterStream(columnLabel, reader, length);
    }

    @Override
    public void updateBlob(int columnIndex, InputStream inputStream, long length)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBlob(columnIndex, inputStream, length);
    }

    @Override
    public void updateBlob(String columnLabel, InputStream inputStream,
            long length) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBlob(columnLabel, inputStream, length);
    }

    @Override
    public void updateClob(int columnIndex, Reader reader, long length)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateClob(columnIndex, reader, length);
    }

    @Override
    public void updateClob(String columnLabel, Reader reader, long length)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateClob(columnLabel, reader, length);
    }

    @Override
    public void updateNClob(int columnIndex, Reader reader, long length)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateNClob(columnIndex, reader, length);
    }

    @Override
    public void updateNClob(String columnLabel, Reader reader, long length)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateNClob(columnLabel, reader, length);
    }

    @Override
    public void updateNCharacterStream(int columnIndex, Reader x)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateNCharacterStream(columnIndex, x);
    }

    @Override
    public void updateNCharacterStream(String columnLabel, Reader reader)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateNCharacterStream(columnLabel, reader);
    }

    @Override
    public void updateAsciiStream(int columnIndex, InputStream x)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateAsciiStream(columnIndex, x);
    }

    @Override
    public void updateBinaryStream(int columnIndex, InputStream x)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBinaryStream(columnIndex, x);
    }

    @Override
    public void updateCharacterStream(int columnIndex, Reader x)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateCharacterStream(columnIndex, x);
    }

    @Override
    public void updateAsciiStream(String columnLabel, InputStream x)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateAsciiStream(columnLabel, x);
    }

    @Override
    public void updateBinaryStream(String columnLabel, InputStream x)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBinaryStream(columnLabel, x);
    }

    @Override
    public void updateCharacterStream(String columnLabel, Reader reader)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateCharacterStream(columnLabel, reader);
    }

    @Override
    public void updateBlob(int columnIndex, InputStream inputStream)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBlob(columnIndex, inputStream);
    }

    @Override
    public void updateBlob(String columnLabel, InputStream inputStream)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateBlob(columnLabel, inputStream);
    }

    @Override
    public void updateClob(int columnIndex, Reader reader) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateClob(columnIndex, reader);
    }

    @Override
    public void updateClob(String columnLabel, Reader reader)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateClob(columnLabel, reader);
    }

    @Override
    public void updateNClob(int columnIndex, Reader reader) throws SQLException {
        // TODO Auto-generated method stub
        rs.updateNClob(columnIndex, reader);
    }

    @Override
    public void updateNClob(String columnLabel, Reader reader)
            throws SQLException {
        // TODO Auto-generated method stub
        rs.updateNClob(columnLabel, reader);
    }

    @Override
    public <T> T getObject(int columnIndex, Class<T> type) throws SQLException {
        // TODO Auto-generated method stub
        return rs.getObject(columnIndex, type);
    }

    @Override
    public <T> T getObject(String columnLabel, Class<T> type)
            throws SQLException {
        // TODO Auto-generated method stub
        return rs.getObject(columnLabel, type);
    }

    @Override
    public <T> T unwrap(Class<T> iface) throws SQLException {
        // TODO Auto-generated method stub
        return rs.unwrap(iface);
    }

    @Override
    public boolean isWrapperFor(Class<?> iface) throws SQLException {
        // TODO Auto-generated method stub
        return rs.isWrapperFor(iface);
    }
    
}

二、数据的获取及显示

    <%@ page contentType="text/html" pageEncoding="GB2312" language="java"%>  
    <%@ page import="java.sql.*"%>  
    <%@page import="com.cn.page.Pageable"%>
    <%@page import="com.cn.page.PageableResultSet"%>
    <html>  
        <head>  
            <title>hello</title>  
        </head>  
        <body>  
        <table border="1" spacing="2">  
    <%!  
        public static final String DRIVER = "com.mysql.jdbc.Driver";  
        public static final String USER = "root";  
        public static final String PASS = "123456";  
        public static final String URL = "jdbc:mysql://localhost:3306/test_db";  
        public static final int PAGESIZE = 5;  
        int pageCount;  
        int curPage = 1;  
    %>  
    <%  
        //一页放5个  
        String user = null;  
        String pass = null;  
        Pageable rs = null;
        try{  
            Class.forName(DRIVER);  
            Connection con = DriverManager.getConnection(URL,USER,PASS);  
            String sql = "SELECT * FROM fruits";  
            PreparedStatement pstmt = con.prepareStatement(sql,ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);  
            
            rs = new PageableResultSet(pstmt.executeQuery());
            
            rs.setPageSize(5);
            
            String tmp = request.getParameter("curPage");  
            if(tmp==null){  
                tmp="1";  
            }  
            
            curPage = Integer.parseInt(tmp);  
//            out.println(curPage);  
            
            rs.gotoPage(curPage);
            int count = 0;  
            
            pageCount = rs.getPageCount();
              
            for(int i=0;i < rs.getPageRowsCount();i++){  
                if(count>=PAGESIZE)break;  
                String empno = rs.getString(1);  
                int ename = rs.getInt(2);  
                String job = rs.getString(3);  
                float hiredate = rs.getFloat(4);  
                rs.next();
                count++;  
                %>  
            <tr>  
                <td><%=empno%></td>  
                <td><%=ename%></td>  
                <td><%=job%></td>  
                <td><%=hiredate%></td>  
            </tr>  
                <%  
            } 
            con.close();  
        }  
        catch(Exception e){  
              
        }  
    %>  
    </table>  
    <a href = "fruits.jsp?curPage=1" >首页</a>  
    <a href = "fruits.jsp?curPage=<%=curPage-1%>" >上一页</a>  
    <a href = "fruits.jsp?curPage=<%=curPage+1%>" >下一页</a>  
    <a href = "fruits.jsp?curPage=<%=pageCount%>" >尾页</a>  
    第<%=curPage%>页/共<%=pageCount%>页  
      
    </body>  
    </html>  

三、html显示页面的修改

<form name="f2" id="f2" action="fruits.jsp" method="post">
        <table border="0">
            <tr>
                <td>所有水果:</td>
                <td colspan="2"><input type="submit" value="查看所有水果"></td>
            </tr>
        </table>
</form>

至此，实现了数据的分页显示，以上代码验证通过。